Estate Diamond Exchange, located at 5017 Kanan Rd, Agoura Hills, CA 91301, serves the jewelry needs of clients throughout Ventura County with a notable emphasis on engagement ring creation. This family-owned business is known for its personalized service, highlighted by encounters with skills from Leo, a master jeweler, as well as the knowledgeable staff like Sandy and Pauline. Customers appreciate their ability to transform old family heirlooms into beautiful custom designs that convey personal significance. Estate Diamond Exchange offers a blend of fine contemporary jewelry, watches, and unique estate pieces, ensuring there is something for everyone.

Operating hours are as follows:
- Monday: 10:00 AM - 6:00 PM
- Tuesday: 10:00 AM - 6:00 PM
- Wednesday: 10:00 AM - 6:00 PM
- Thursday: 10:00 AM - 6:00 PM
- Friday: 10:00 AM - 6:00 PM
- Saturday: 10:00 AM - 5:00 PM
- Sunday: Closed

Overall Sentiment from Online Customer Reviews:
Positive reviews account for approximately 75%, neutral sentiments at 15%, and negative responses make up about 10%. Customers predominantly praise the skill and attentiveness of the staff, particularly in creating custom engagement rings, while some have had issues with communication and service expectations.

Best Review:
A customer highlighted the exceptional service from Leo and the team at Estate Diamond Exchange, noting their ability to design a spectacular engagement ring that honored family traditions while elevating the piece with beautiful new elements, resulting in a stunning outcome.

Worst Review:
Another customer expressed dissatisfaction with the service provided, claiming that their ring was damaged during a resizing process. They felt their concerns were not adequately addressed by the staff, leading to frustration over the handling of their valuable jewelry.

* For this overview, customer feedbacks were viewed on Yelp, Google, and Facebook.